Section steel frame weld-free split supporting structure for tunnel primary support construction
A supporting structure and assembled technology, which is applied in tunnels, tunnel linings, installation of anchor rods, etc., can solve problems such as difficult quality assurance, slow construction speed, pollution, etc., and achieves convenient connection and construction, convenient construction, and convenient installation and use Effect
Active Publication Date: 2017-05-31
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
[0008] In view of the defects in the above-mentioned prior art, the purpose of the present invention is to solve the above-mentioned insufficiencies in the background technology, and to provide a weld-free assembled support structure of section steel frame for tunnel initial support construction, which is not only simple in structure, but also easy to assemble , and can effectively avoid related problems such as slow construction speed, pollution, and difficult quality assurance caused by tunnel welding construction
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[0030] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0031] Depend on Figure 1 to Figure 2The structural schematic diagram of a welded-free assembled support structure of a profiled steel frame used for the initial tunnel construction can be seen, the present invention is mainly used for the bearing during the initial construction of the tunnel, and it includes multiple beams arranged at intervals along the longitudinal direction of the tunnel. Profiled steel arches A, each profiled steel arched A is anchored on the tunnel wall through the locking foot anchor pipe connection device B; the adjacent profiled steel arches A are connected to ea...
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The invention discloses a section steel frame weld-free split supporting structure for tunnel primary support construction. The section steel frame weld-free split supporting structure comprises multiple section steel arches arranged in the longitudinal direction of a tunnel at intervals, each section steel arch is anchored to the tunnel wall through a locking anchor pipe, and every two adjacent section steel arches are connected through a longitudinal connecting device. The section steel frame weld-free split supporting structure is simple and convenient to install and use, welding is avoided through split connection between the section steel arches, the longitudinal connecting devices and the locking devices, and related problems of causing low construction speed and pollution by welding and being difficult to ensuring quality are avoided; a steel plate is welded to each section steel arch in advance, and holes are preserved in each steel plate and can be used for pilot holing to facilitate construction.
Description
technical field [0001] The invention relates to a tunnel initial support device, belonging to the technical field of tunnel construction engineering, in particular to a welded-free assembled support structure of a profiled steel frame used for tunnel initial support construction. Background technique [0002] At present, composite lining is widely used in tunnel engineering in my country. According to the design concept of the New Austrian Method, the initial support is the main bearing structure. The initial support of the tunnel is a joint support system composed of shotcrete, bolts, steel frames, etc. The steel frame has greater support strength and stiffness, which can significantly enhance the initial support capacity. In order to increase the overall stability of each steel frame, longitudinal connecting steel bars are often used to connect adjacent steel frames; in order to anchor the steel frame in the deep part of the surrounding rock and give full play to the rigid...
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IPC IPC(8): E21D11/18E21D11/28E21D21/00
CPCE21D11/18E21D11/28E21D21/008
Inventor 肖明清焦齐柱杨剑廖辉
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP